<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8" />
    <title></title>
    <script src="https://unpkg.com/vue@3/dist/vue.global.js" type="text/javascript" charset="utf-8"></script>
</head>
<body>
    <div id="app">
        {{ message }}
    </div>
    <script>
        const obj = {
            data() { 
                return {
                    message: '北京联大'

                }
            }
        };
        Vue.createApp(obj).mount('#app');
    </script>
</body>

</html>